One in a series of posts about the Heartland Institute’s inner workings, from internal documents acquired by ThinkProgress Green. ThinkProgress is among several publications to have published documents attributed to the Heartland Institute and sent to us from an anonymous and then unknown source. The source later revealed himself. Heartland Institute has issued several press releases claiming that one document (“2012 Climate Strategy”) is fake and asserting other claims regarding the other documents. ThinkProgress has taken down the “2012 Climate Strategy” document as it determines the document’s authenticity.